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6
result(s) for
"Xool-Tamayo, Jorge"
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In vitro and in vivo anti-inflammatory properties of Mayan propolis
2020
Introduction
Propolis has been used traditionally for different human diseases and even recently as dental biomaterials because of its antibacterial, antimycotic, and anti-inflammatory properties. However, a proper correlation between in vitro and in vivo anti-inflammatory properties has not been clearly established.
Methods
The composition of propolis was determined by high-performance liquid chromatography–ultraviolet mass spectrometry (HPLC-UV-MS). Viability of ethanolic propolis solution was evaluated by thiazolyl blue tetrazolium bromide (MTT) assay on murine macrophages. The anti-inflammatory properties were assessed both in vitro through the enzyme-linked immunosorbent assay (ELISA) quantification of various cytokines and in vivo by induced edemas.
Results
Chemical analysis showed pinocembrin, pinobanksin-3-O-acetate, and pinobanksin-3-O-propionate as the main components of propolis. Macrophage viability was high (106%) when propolis was used up to 50 µg/mL. ELISA studies showed a reduction in the expression of pro-inflammatory cytokines (IL-1β, IL-6, and TNF-α) up to 145 pg/mL, 350 pg/mL, and 210 pg/mL, respectively, while the anti-inflammatory cytokines (IL-10 and IL-4) were increased up to 833 pg/mL and 446 pg/mL. Finally, edema was reduced on paw and ear mice by 9% and 22%, respectively.
Conclusion
Mayan propolis has strong in vitro anti-inflammatory properties without compromising macrophage viability, resulting in a low-to-mild in vivo anti-inflammatory response.
Journal Article
Alkaloid Biosynthesis in the Early Stages of the Germination of Argemone mexicana L. (Papaveraceae)
by
Muñoz-Sánchez, José Armando
,
Monforte-González, Miriam
,
Tamayo-Ordoñez, Yahaira
in
Alkaloids
,
Argemone mexicana
,
benzylisoquinoline alkaloids
2021
The synthesis of the benzylisoquinoline alkaloids, sanguinarine and berberine, was monitored in Argemone mexicana L. (Papaveracea) throughout the early stages of its hypocotyl and seedling development. Sanguinarine was detected in the cotyledons right after hypocotyl emergence, and it increased continuously until the apical hook unbent, prior to the cotyledonary leaves unfolding, when it abruptly fell. In the cotyledonary leaves, it also remained at low levels. Throughout development, berberine accumulation required the formation of cotyledonary leaves, whereas it was quickly detected in the hypocotyl from the time it emerged. Interestingly, the alkaloids detected in the cotyledons could have been imported from hypocotyls, because no transcriptional activity was detected in there. However, after turning into cotyledonary leaves, important levels of gene expression were noted. Taken together, these results suggest that the patterns of alkaloid tissue distribution are established from very early development, and might require transport systems.
Journal Article
Metabolomic Characterization of Phoradendron brachystachyum Mistletoe and In-Silico and In-Vitro Investigation of Its Therapeutic Potential in Metabolic Disorders
by
Antunes-Ricardo, Marilena
,
Leyva-López, Nayely
,
Gutiérrez-Grijalva, Erick Paul
in
Acids
,
antioxidant
,
Antioxidants
2023
Plants of the Phoradendron genus have been traditionally used for their lipid- and glucose-lowering effects. However, the compounds responsible for these effects and the overall chemical profile of these plants have not been thoroughly investigated. We aimed to characterize the metabolome of leaves, stems, and aerial parts of the Phoradendron brachystachyum plant. We used mass spectrometry and colorimetric screening techniques (with various solvents) to identify and characterize the metabolites present. We also evaluated the antioxidant (FRAP, ORAC, TEAC, and DPPH assays) and inhibitory effects on pancreatic lipase and α-glucosidase enzymes of hydrophilic extracts. Furthermore, we compared the molecular fingerprints between the identified metabolites and FDA-approved drugs to gain insights into the metabolites that might be responsible for the observed effects on enzymes. Our findings revealed the presence of 59 putative metabolites, primarily flavonoids. However, we also hint at the presence of peptide and carbohydrate derivatives. The leaf extracts demonstrated the most promising metrics across all assays, exhibiting strong antioxidant and enzyme inhibitory effects as well as high levels of phenolic compounds, flavonoids, and tannins. Fingerprint analysis suggested potential peptide and carbohydrate metabolites as pancreatic lipase and α-glucosidase inhibitors. Overall, our study provides evidence on specific metabolites in Phoradendron brachystachyum that could be responsible for the therapeutic effects noted in obese and type 2 diabetes subjects.
Journal Article
Development of newly sanguinarine biosynthetic capacity in in vitro rootless shoots of Argemone mexicana L. Mexican prickly poppy
by
Serrano-Gamboa, Germán
,
Monforte-González, Miriam
,
Mirón-López, Gumersindo
in
Aerials
,
Alkaloids
,
Analysis
2017
Objective
To analyze berberine and sanguinarine biosynthetic capacities of both in vitro shoot and root cultures of
Argemone mexicana
and tissues from entire plants at different developmental stages.
Results
Berberine and sanguinarine were equally distributed in roots and aerial tissues of developing plantlet whereas, in juvenile plants, sanguinarine was only detected in roots. This alkaloid distribution was consistent with that of biosynthetic transcripts in juvenile plants. However, lower transcript abundance in plantlets´ leaves suggests that alkaloids were mainly formed in roots and then mobilized to this tissue. In vitro root cultures maintained similar alkaloid profiles to those from intact seedlings and plantlets. However, in addition to berberine, rootless shoot cultures accumulated high levels of sanguinarine and biosynthetic transcripts.
Conclusion
In vitro shoot cultures of
A. mexicana
can synthesize sanguinarine in addition to berberine. This represent a convenient system for the production of both alkaloids.
Journal Article
Metabolomic Characterization of IPhoradendron brachystachyum/I Mistletoe and In-Silico and In-Vitro Investigation of Its Therapeutic Potential in Metabolic Disorders
by
Antunes-Ricardo, Marilena
,
Leyva-López, Nayely
,
Gutiérrez-Grijalva, Erick Paul
in
Analysis
,
Antioxidants
,
Chemical properties
2023
Plants of the Phoradendron genus have been traditionally used for their lipid- and glucose-lowering effects. However, the compounds responsible for these effects and the overall chemical profile of these plants have not been thoroughly investigated. We aimed to characterize the metabolome of leaves, stems, and aerial parts of the Phoradendron brachystachyum plant. We used mass spectrometry and colorimetric screening techniques (with various solvents) to identify and characterize the metabolites present. We also evaluated the antioxidant (FRAP, ORAC, TEAC, and DPPH assays) and inhibitory effects on pancreatic lipase and α-glucosidase enzymes of hydrophilic extracts. Furthermore, we compared the molecular fingerprints between the identified metabolites and FDA-approved drugs to gain insights into the metabolites that might be responsible for the observed effects on enzymes. Our findings revealed the presence of 59 putative metabolites, primarily flavonoids. However, we also hint at the presence of peptide and carbohydrate derivatives. The leaf extracts demonstrated the most promising metrics across all assays, exhibiting strong antioxidant and enzyme inhibitory effects as well as high levels of phenolic compounds, flavonoids, and tannins. Fingerprint analysis suggested potential peptide and carbohydrate metabolites as pancreatic lipase and α-glucosidase inhibitors. Overall, our study provides evidence on specific metabolites in Phoradendron brachystachyum that could be responsible for the therapeutic effects noted in obese and type 2 diabetes subjects.
Journal Article
Opportunities and considerations for using artificial intelligence in bioinformatics education
by
Mulder, Nicola
,
Nathan, Aparna
,
Kandpal, Manoj
in
Artificial intelligence
,
Computational biology
,
Computational linguistics
2025
Abstract
Artificial intelligence (AI) tools and techniques are undoubtedly being used in bioinformatics education, reflecting broader trends in education. However, many instructors and learners may be unaware of the full scope of potential uses for these tools within bioinformatics education, as well as effective practices for using them. Building on discussions held at the 6th Global Bioinformatics Education Summit, this perspective article provides insights about ways that AI might be used to generate or adapt instructional content, provide personalized help for learners, and automate assessment and grading. Additionally, we highlight AI skills that are important for bioinformatics learners to develop in order to effectively use AI as a bioinformatics learning tool. We highlight currently available tools in the quickly evolving AI landscape and suggest ways that instructors or learners might use such tools. Furthermore, we discuss key considerations and challenges associated with integrating AI into bioinformatics education, including ethical implications, potential biases, and the need to critically evaluate AI-generated content. Finally, we highlight the need for further research to better understand how AI tools are being used in practice and empower their effective and responsible use in bioinformatics education.
Journal Article